Yakiimoman

Yakiimoman's head is comprised of a baked sweet potato. He wears a yellow hat, a cyan shirt, a blue apron, ared-orange pants, and purple shoes. He pulls a wagon containing baked sweet potatoes.
Yakkimoman has a brother named Baron Yaki.
Yakiimoman first appeared in the episode "Anpanman and Yakkimoman" on October 7, 1991. He also appeared in his brother's debut "Baron Yaki and Yakkimoman", which first aired on 1995.

(Source: Anpanman Wiki)